Public: Checked (optional, but recommended if you want other tenants to use
it)

Click Create Image

Wait a moment for the status to become active. This should only take a few
seconds. To boot an instance with the ISO you uploaded, be sure to choose
Boot from image and select netboot.xyz ISO from the drop down list.
Configure networking and security groups as you normally would for any other
instance.

When the instance has fully built and gone to active status, click on the
instance name and then go to the Console tab. Depending on your browser,
you may need to click the link to show only the console.

At that point, you should be able to view the netboot.xyz iPXE menu and install
your operating system.